Rates of cell production and cell death are approximately equal during the ________ phase of growth
A) lag
B) log
C) death
D) stationary
E) intermediate
D
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When nutrients are suboptimal for cell growth and division, the cell cycle arrests. At which stage of the cell cycle/checkpoint would you predict this arrest to occur?
A. G1 checkpoint B. G2 checkpoint C. M checkpoint D. G1, G2, and the M checkpoints E. It is not possible to answer with the information given.
The black bread mold Rhizopus stolonifer and dung-infesting fungi of the genus Pilobolus are
members of which fungal phylum?
a. Glomeromycota b. Basidiomycota c. Chytridiomycota d. Zygomycota e. Ascomycota
Scientists studying human behavior observe brain activity in an MRI for many patients. They show photos of babies to adults and look at which part of the brain lights up. They conclude that the part that lights up is in control of that response.
What will be an ideal response?
Jim is suffering from congestive heart failure, in which blood flow is backed up in his lungs and excess fluid is escaping the blood and accumulating in his lung tissue. If untreated, increasing pulmonary edema will lead to death by suffocation. What is the most likely cause of Jim's congestive heart failure?
A. Contraction of his left ventricle is not keeping up with contraction of his right ventricle. B. Jim's SA node is malfunctioning. C. Jim's pulmonary semilunar valve is not opening properly. D. Contraction of his right atrium is not keeping up with contraction of his left atrium. E. Jim's right atrioventricular valve (tricuspid valve) is not closing properly.